heilborn



(No Model.)

F. P; HEILBORN *OHAIN BRACELET.

No. 312,994. Patented Feb. 24, 1885.

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NITED STATES ATFNl trier.

FRANCIS F. HEILBORN, OF PLA1NVILLE, MASSACHUSETTS, ASSI'GNOB TO LINCOLN,BACON 8t 00., OF SAME PLACE.

.CHAlN BRACELET.

SPECIFICATION forming part of Letters Patent No. 312,99, dated February24, 1885.

Application filed September 8, 1884. (N0 model.)

State of Massachusetts, have invented an 1111-.

provement in Chain Bracelets, of which the following is a specification.

My invention relates particularly to an improvement in the adjustableclasps for chain bracelets; and it consists in the combination of aclasp-box with a chain-fastening catch and a sliding plate, ashereinafter fully set forth.

Figure l is a top view of a roller-chain bracelet provided with myimproved clasp. Fig. 2 is a partial section of the same, taken in theline 00 of Fig. 1. Fig. 3 is a transverse section of the clasp-box,taken in the line 00 a: of Fig. 1, with the clasp removed. Fig. 4 is atop view of a bugle-chain bracelet provided. with my improvement, andshowing an edge View of the sliding-plate removed from the grooves ofthe claspbox. Fig. 5 is a partial section of the bracelet, showing thesliding plate in its engaging position.

In the accompanying drawings, A, Fig. l, is the ordinary roller-chain,to one end, a, of which is secured the clasp-box B, which is providedinteriorly with the catch-pins b 1), adapted to pass between the linksit h of the chain. The box B is formed with opposite grooves, c c, whichare adapted to receive the edges of the sliding plate 0, the frontsurface of which may be provided with any suitable ornamentation. Uponthe under side of the plate 0 are'arranged the pins d d, and to theinner sides of the box B are secured the pins 6 e, which are adapted toengage with the pins d d, thus forming a stop for the forward movementof the sliding plate, as shown in Fig. 5.

In clasping the bracelet the free end f of 40 the chain is to be placedover thecatch-pins b b, so that the pins will passinto the intersticesof the chain between the links, the sliding plate 0 being in themeantime drawn back, as shown in Fig. 1, and after properly arrangingthe chain upon the pins so that the loop of the chain shall be of therequired length to properly encircle the wrist of the wearer the slidingplate 0 is to be forced forward in the grooves c 0 over the end f of thechain, as shown in Fig. 5, by which means the endf will be firmly heldwithin the clasp-box by the'engagcment of the links and catch-pin.

A slight modification is shown in Fig. 4, Y which shows my improvedclasp-box attached to a bugle-chain, and having a catch-bar, 12, securedto the inner side of the bed-plate g of the box, the bar I) beingadapted to enter the space between the bugles ofthe chain, as shown inFig. 5, which shows the end foot the chain as held upon the catch by theforward movement of the clasp from the position shown in Fig. 2.

I claim as my invention In a clasp for chain bracelets, the combina tionof the sliding plate forming the upper side of the clasp-box, andadapted to slide over the end of the bracelet-chain, with theupwardly-projecting catch adapted to engage with the lower face of thechain, substantially 70 as and for the purpose specified.

FR ANOIS F. HEILBORN.

Witnesses:

HARLAND G. BACON, WILLIs P. GUILD.

